Q2. Give reasons: (two points each) (a) Tungsten is used as a filament in bulbs. (b) Nichrome is used as a heating element in geysers.
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a) Tungsten is used as a filament in bulbs because it glows when electricity passes through it.
b) Nichrome is used as a heating element in geysers because it gets heated when electricity passes through it in other words it canges electrical energy into heat energy.
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